java.lang.IllegalArgumentException Expected MultipartHttpServletRequest

Solution: Check the jar package and add it to the Spring MVC configuration file after completion :

 

<!--
     When file upload function is required, enable the following configuration
     Set the maximum upload file size 10M=10*1024*1024(B)=10485760 bytes
 --> 

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
      <property name="maxInMemorySize">      
      <value>10485760 </value>    
</property></bean>